Elevator



Aug. 5 1924-.-

S. P. ERWI N ELEVATOR 3 Sheets Sheet 1 Filed Sept. 19, 1922 INVENTOR,

A TTORNEY.

ELEVATOR 3 Simets-Sheet Filed Sept. 19: 1922 INVENZ'OR.

' HTTORNEY.

Patented Aug. 5, 1924.

asaanaa SAMUEL P. EBWIN, OF SANTA ROSA, CALIFORNIA.

ELEVATOR.

Application filed September 19, 1922. Serial No. 589,228.

T 0 all whom it may concern:

Be it known that I, SAMUEL P. ERWIN, a citizen of the United States,residing at Santa Rosa, in the county of Sonoma and State of California,have invented certain new and useful Improvements in Elevators, of whichthe following is a specification.

This invention relates to improvements in an elevating apparatus, moreparticularly to that class of portable elevating apparatuses, employedin warehouses, stores, and the like, to facilitate the handling ofcertain classes of merchandise, more particularly, bales of hay, andsacks of grain, but it is to be understood that the apparatus can beemployed for any purposes wherein it is found applicable, and theinvention has for its object to provide an apparatus of such class withmeans, in a manner as hereinafter set forth, for conveniently andexpeditiously conveying from a lower to a higher level, or from a higherto a lower level, merchandise, and further for discharging themerchandise when the destination therefor has been reached.

A further object of the invention is to provide an apparatus of suchclass, in a manner as hereinafter set forth, with a traveling carriageprovided with a carrier for the merchandise, the carrier having means tocause the automatic dumping therefrom in a sidewise direction ofthemerchandise at various levels.

A further object of the invention is to provide an apparatus of suchclass, with means in a manner as hereinafter set forth, forautomatically discontinuing the operation of conveying the merchandisewhen the latter has been conveyed to its point of destination.

A further object of the invention is to provide an apparatus of suchclass, with means in a manner as hereinafter set forth, to adjust thesupporting frame of the apparatus, so that the merchandise can bedelivered to different levels.

Futher objects of the invention are to provide an apparatus of suchclass, in a manner as hereinafter set forth, which is comparativelysimple in its construction and arrangement, portable, strong, efficientin its use, conveniently operated, readily assembled and comparativelyinexpensive.

With the foregoing and other objects in view, the invention consists ofa novel construction, combination and arrangement of parts, ashereinafter more specifically described, and illustrated in theaccompanying drawings, wherein is shown an embodiment of the invention,but it is to be understood that changes, variations and modificationscan be resorted to which come within the scope of the claims hereuntoappended.

In the drawings wherein like reference characters denote correspondingparts throughout the several views Figure 1 is a sectional sideelevation of an elevating apparatus in accordance with this invention,

Fig. 2 is a front elevation thereof,

Fig. 3 is a sectional view of the means for elevating the frame of theapparatus to provide for discharge at various levels,

Fig. 4 is a side elevation,-broken away,

illustrating the carriage and carrier-at the upper end of the apparatus,

Fig. 5 is a fragmentary View, in side elevation, of the lower portion ofthe supporting frame and base and further showing one of the trip armsin operative position and another in inoperative position.

Fig; 6 is a fragmentary view, in front elevation, illustrating thecarriage and carrier and the sidewise dumping element in full and indotted lines.

Fig. 7 is a section on line 7-7 of Fig. 5,

Fig. 8 is a fragmentary view of the supporting frame in side elevation,showing the adaptation with the lower end thereof, of a modified form ofcarrier,

Fig. 9 is a side view, and

Fig. 10 a front View of the modified form of carrier.

Referring to the drawings in detail, 1 denotes a portable frame,provided at the front and rear thereof, with depending brackets 2,carrying wheels 8, and the said base 1 is formed with a pair of side andend bars, and with the front end bar positioned in wardly with respectto the forward ends of the side bars. The brackets 2 depend from the endbars of the base 1. The rear bar of the base 1 is indicated at 4- andhas secured thereon a pair of spaced keepers 5 for a purpose to behereinafter referred to, and arranged forwardly of the end bar 4; is apair of standards 6, only one of which is shown, and mounted in thestandards 6 is a shaft 7, provided with a pulley 8, which is operativelyconnected with a motor 9, supported on the platform 1 through the mediumof the endless belt 10.

A clutching mechanismmot shown, is mounted on the shaft 7, for thepurpose of clutching and unclutching the wheel 8 to and from the shaft7. The levers 11 and 12, pivoted at tinue the operation of the shaft7will be hereinafter referred to.

Supported by the base 1, is a rea'rwardly inclined and adjustablesupporting frame,

which provides a trackway,-and it consists of a pair of elongated bars 13, 14, each having its inner face provided with a longitudinallyextending channel 15 which constitutes a combined track and guideway.Each of the bars '13, 14, in proximity to its lower end, is pivotallyconnected as at 16, to the forward end of a side bar of the base 1. Thelower ends of the bars 13', 14, are'positioned inwardly with respect tothe forward ends of the side bars of the base 1. The'bars 13, 14, arearranged in spaced relation and. have positioned therebetween, as wellas secured to the under sides thereof, a series of transverselyextending combined brace and coupling members 17. Arranged between thebars 13', 14, in proximity to the lower ends thereof, is a transverselyextending shaft 18, which carries a pulley 19, and the purpose of thelatter will be hereinafter referred to. Positioned between the bars 13,14, in proximity to the upper ends thereof, is a shaft 20, provided witha pulley 21, and furthermore said shaft 20 has connected therewith,oppositely disposed bracket arms 22, which are secured to the innerfaces of the bars 13, 14, whereby a supporting means for theintermediate part ofthe shaft 20 is provided. The bracket arms 22 arefixedly secured to the bars 13, 14, as at 23. The pulley 19, as well asthe pulley 21, is grooved. The upper end of each of the bars 13, 14, isformed with a circular extension 24, grooved as at 25, and which forms"a continuation ofthe channel 15. The 011' cular elements 24 areprovided for directing the carriage and carrier, to be presentlyreferred to, to dumping position, as indicated in dotted lines .in Fig.1 and in full lines in Fig. 4.

The frame is maintained in an inclined position with respect to the base1,through side bars thereof extending into the sides of the yoke 26, asat 28. Secured on the upper end of each of the sides of the yoke 26, isa three-way coupling 29, the latter having openings 30 for the passageof the sides of the yoke 27. The three-way coupling 29 provides meansfor connecting to the up per end of the sides of the yoke 26, a pair oftransversely extending bars 31, which have their opposed ends connectedtogether by afour-way coupling 32. The upper end of the yoke27 ispivotally connected to the supporting frame, at the rear :thereof,

through the medium of a pair of keepers 33. Connected to the top of theyoke 27 at 34 is a depending hanger rod 35, which extends through thefour-way coupling 32 and carries on its lower end a pulley 36. Each ofthe rods or bars 31, is provided with a'han 'er 37 carr ing on its lowerend a 5 pulley 38. The rear of the sides of the yoke 26, has securedthereto a pair of journals 39, in which is mounted a winding shaft 40,the latter projecting'from one side of the yoke 26', and carrying acrank handle 41, for the purpose of rotating the shaft 40 whenoccasionrequires. The shaft 40 is provided with a conventional lock as indicatedat 40 and which is in the form of a pawland ratchet. The ratchet iscarried by the shaft 40 and the pawl by one of the arms of the yoke 26.The section 27 is vertically shifted, and the means for shifting it,consists of a flexible elevatmg member 42 which has each end thereofwound on the shaft 40, as at 43, 44. The member 42 travels'over thepulley 36 well as over the pulleys 38 and when the shaft 40 is revolvedin either direction,'the by,

the supporting frame can be adjusted to' various positions, so that themerchandise can be conveyed to various levels.

Traveling lengthwise of the supporting frame, in the trackways 15, is ashiftable carriage consisting of a pair of transversely extending shafts45, 46, which are arranged in parallelism and spaced from each other,and each ofwhichhas its ends provided with a roller 47, which travels inthe traekways 15. The carriage further includes a pair of opposed stubshafts 4.8, which are spaced from the shaft 46, and each of which hasits outer end provided with a roller 49 traveling in the trackways 15.Secured on the inner end of each of the stub shafts-48, so as to pivotthereon, is-the' forward end of a link 50, the latter beingnormallydisposed at a rearward and outward inclinatiom and is pivotallyconnectedas at 51 to the foe 1ng end bar 55, which is triangular intransverse sections' and acts as a spacing element for the upper endportion of the merchandise on the carrier. Each of the side bars 54 hasan enlargement, at the rear end there of, as at 56, and which isapertured as at 57. The rear end of each of the side bars 54 is formedwith an angle-shaped extension 58 and which provides supports for acombined holding and dtunping plate 59. The plate 59 has depending fromits rear face a pair of eyes 60,61, and to the eyes 60, is connected tothe lower end 62 of a dumping lever 63 which is pivoted as at 64 in oneof the enlarged portions 56 of the side bar 54. The other eyes 61 areadapted to receive the lower outwardly projecting leg of one of theextensions 58.

The extensions of the side bars 54 of the carrier as well as the dumpingplate 59 are so constructed, that the plate 59 can be ad justed withrespect to the carrier so that the dumping action, which is sidewise canbe had from either side of the carriage. In this connection, it will bepointed out that when dumping one side of the carriage, one of theangle-shaped ends of one side bar 54 acts as a support for the plate 59,while the other angle-shaped end provides a pivot, owing to the factthat it is extended in the eyes 61. By reference to Fig. 6, it is shownin dotted lines, the position of the parts when dumping from one side ofthe carriage, and if it be desired to dump sidewise from the other sideof the carriage, the lever 63 is pivoted in the other bar 54, and theeyes 61 mounted on the angle-shaped end 58. To obtain this arrangement,it is obvious that the plate 59 is shifted to an opposite position tothat shown in Fig. 6.

Interposed between the carriage and the carrier is pivotal supportfor-the carrier and which consists of a pair of elongated bars 65, eachhaving the ends thereof bent at an angle and extending in oppositedirections with respect to each other. The angleshaped portion at therear end of the bar is indicated at 66, and the angle-shaped portion atthe forward end of the bar is indicated at 67. The angle-shaped portion66 projects outwardly, while the angle-shaped portion 67 projectsinwardly. The angleshaped portions 67 are pivotally mounted on the stubshafts 48, and the angle-shaped por tions 66 are pivotally connected tothe side bars 54 of the carrier frame, as at 68.

Connected to the shaft 46 of the carriage, is an elevating and loweringcable 15, which extends upwardly and over the pulley 21,

and then downwardly and winds on and off the shaft 7. When the shaft 7is operated in one direction, the cable will elevate the carriage, thelatter carrying the carrier therewith and when the shaft 7 operates inan opposite direction, the carriage will lower by gravity, carrying thecarrier therewith.

The apparatus further includes means for discontinuing the operation ofthe shaft 7, when elevating the carriage, when the carriage arrives atthe upper end of the supii porting frame and assumes dumping position,as illustrated in Fig. 1. This means consists of a sectional flexiblemember 69 and which has the sections thereof adjustably connectedtogether as at 70, to provide for increasing and decreasing the lengthof the member 69, depending with respect to the inclined position of thesupporting frame. The member 69 is formed of an upper and a lowersection and the lower section travels over the pulley 19 and isconnected to the turnbuckle or other adjusting device 70. The uppersection of the member 69 is attached to the device 7 O and also to anelongated rod 71, having a hook 72 at its upper end. The rod 71 ismounted in a tube 7 3 which is secured on the front of the braces 17. Tolimit the downward movement of the bar or rod 71, a stop 74 is provided,and the latter is engaged by the hook 72, as clearly shown in Fig. 2 ofthe drawing. The hook end 72 of the rod 71 is positioned in the path ofthe shaft 46, so that when the carriage is traveling toward the upperend of the supporting frame, it reaches the position shown in Fig.

1, and the hook 72 will be engaged with the shaft 46, and the latterwill carry the rod 71 therewith, which in turn will pull the member 69thereby shifting the lever arm 12, so as to'uncouple the pulley 8 fromthe shaft 7, under such conditions, discontinuing the elevating movementof the carriage with the carrier thereon.

The apparatus further includes a means for automatically actuating thelever arm 63, causing thereby, the shifting of the plate 59, so as tosidewise dump the merchandise from the carrier. In this connection, itwill be stated that the lever arm 63 is of length to project beyondeither side bar of the supporting frame, when the lever is mounted inposition, and each side bar of the supporting frame, has securedthereto, a series of spring-controlled trip arms, which are spaced fromeach other, so as to provide the operation of the lever arm 63, as thecar riage moves upwardly at different heights so that the material canbe discharged at different levels. The trip arms are indicated at 75,and pivotal-1y mounted as at .76. They are maintained normally ininoperative position and clear ofthe path of travel of the lever arm 63through the medium of a pulling spring 77 which is eccentricallyconnected as at 78 to the upper end of the trip arm. Stops 79 areprovided on the side bars of the frame for limiting the upward movementof the free end of the trip arm 78.

In Fig. 5 of the drawing, a trip arm 75 is shown in position to beengaged by the lever arm 63, so as to shift the free end of the arm 63downwardly, causing thereby the tilting of the dumping plate 59, so thatthe material carried by the dumping plate can be discharged sidewisewith respect to the car riage. The arms 75 are shifted manually to tripposition, so as to be in the path ofthe upper or free end of the leverarm -63, and the trip arms are also restored to inactive positionmanually.

In Figs. 8, 9 and 10 of the drawings, a modified construction of carrieris set forth,

' and which is designed primarily for supd rollers 84-.

The operation of the shaft 7, say in a clock-wise direction, will windthe cable 15, whereby the carriage provided with a carrier will bepulled upwardly on the trackway. .The merchandise or material to beelevated will be mounted upon the carrier. The carriage will moveupwardly untll the shaft 46 engages the hook 72 at the upper end of therod 71, and as the carriage continues to move, the rod 71 will becarried 5 therewith, thereby shifting the sectional member 7 9, causingthereby the shifting of the lever arm 12, so as to uncouple the pulley 8from the shaft 7,'under such conditions discontinuing the operation ofthe shaft 7 and the elevating movement of the carriage with the carrierthereon. At this point the carrier will have assumed the position shownin dotted lines in Figure 1 and the material discharged from thecarrier. After the ma.- terial has been discharged from the carrier, theshaft 7 is thrown into operation so that it will travel in ananti-clockwise direction, slacking the cable 15, so that the carrier,that is to say the rear portion thereof, will move by gravity againstthe trackway, and on as the shaft 7 continues to revolve in ananti-clockwise direction, the carrier will move down the tra'ckway tonormal position by gravity.

If it is not desired to discharge the ma riage, the trip arm 7 5, at thepoint the ma terial is to be discharged from,.is shifted manually toproject in the path of the lever 63 so that as the carriage movesupwardly,

the free end of the lever arm 63 will engage V the trip arm 75, causingthe swinging of the free end of the arm 63 downwardly as the lever arm63 will shift on its pivot 64, and when the free end of the lever arm 63moves downwardly, as shown in Figure 6, the plate 59 will swing on itspivot as indicated in dotted lines, causing thereby the sidewisedumpingof the merchandise or material.

Vhat I claim is 1. An apparatus for the purpose set forth comprising anupwardly traveling carriage, a carrier arranged thereon and extendinglengthwise thereof, a supporting element for the carrier, said elementhaving one end pivoted with the upper end of the carriage and its otherend pivoted with the lower end of the carrier.

2. An apparatus forthe purpose set forth comprising an upwardlytraveling carriage, a carrier arranged thereon and extending lengthwisethereof, asupporting element for the carrier, said element having oneend pivoted with the upper end of the carriage and its other end pivotedwith the lower end of the carrier, and means on said carrier to providefor sidewise dumping therefrom.

3. An apparatus for the purpose set forth comprising an upwardlytraveling carriage, a carrier arranged thereon and extending lengthwisethereof, a supporting element for the carrier, said element having oneend pivoted with the upperend of the carriage and its other end pivotedwith thelowerend of the carrier, and means on said carrier to providefor sidewise dumping from. either side thereof. r V r 4. An apparatusforthe purpose set forth comprising a supporting frame provided withtrackways, a tiltable carriage traveling in said trackways and providedwith a supporting carrier bodily tilting therewith and further includinga shaft intermediate the lit) ends thereof, means connected to saidshaft forconveying the carriage to tilting position, and meansshiftablymounted on said frame and having its upper end engaged by said shaft fordiscontinuing the conveying of thecarriage when the carriage reachestilting position. 7 V

5. An apparatus for the purpose set forth, a normally inclinedsupporting frame provided with trackways, a portable base therefor towhich said frame is pivoted, an extensible supporting device pivotallymounted on the base and connected to the frame for supporting it andproviding means to adjust the frame at various inclinations with respectto the base, and a tiltable carriage traveling in said trackways.

6. An apparatus for the purpose set forth comprising a supporting frameprovided with trackways and including a shaft arranged intermediate theends thereof, a carriage traveling on said trackways, means connected tothe shaft for conveying the carriage to one end of the frame and meanson said frame and operated by the shaft for discontinuing the conveyingof the carriage when the carriage moves over the said end of the frame.

7. An apparatus for the purpose set forth comprising an uprightsupporting frame provided with trackways, a carriage traveling on saidtrackways, means for conveying the carriage, a supporting carrier onsaid carriage and having means to provide for sidewise dumping, andselective trip devices carried by said frame for actuating said meansfor sidewise dumping.

8. An apparatus for the purpose set forth comprising a supporting frameprovided with trackways, a carriage traveling on said trackways, meansfor conveying the carriage to one end of the frame, and adjustable meansextending lengthwise of said frame and operated by the carriage fordiscontinuing the conveying thereof when the carriage arrives at saidend of the frame.

9. An apparatus for the purpose set forth. comprising an upwardlymovable travelling carriage, a carrier arranged thereon and extendinglengthwise thereof, a supporting element for the carrier, said elementhaving one end pivoted with the upper end of the carriage and its otherend pivoted to the lower end of the carrier thereby providing for theswinging of the latter on the supporting element for the reception ofthe load, and said carrier provided with trip actuated means to causesidewise dumping therefrom.

10. An apparatus for the purpose set forth comprising an upwardlymovable travelling carriage, a carrier arranged thereon and extendinglengthwise thereof, a supporting element for t e carrier, said elementhaving one end pivoted with the upper end of the carriage and its otherend pivoted to the lower end of the carrier thereby providing for theswinging of the latter on the supporting element for the reception ofthe load, and an inclined supporting frame provided with trackways forsaid carriage, means connected with the carriage for elevating it onsaid trackways, and means at the upper end of the frame and forming acontinuation of the trackways for tilting the carriage to discharge theload from the carrier.

11. An apparatus for the purpose set forth comprising an inclinedsupporting frame provided with trackways, a tiltable carriage travellingon said trackways, a load carrier arranged on the carriage and extendinglengthwise thereof, a supporting element for the carrier, said elementhaving one end pivoted with one end of the carriage and its other endpivoted with an end of the carrier opposite the end to which the elementis pivoted to the carriage, circular grooved extensions arranged at theupper end of the frame and forming a continuation of said trackways andproviding means for tilting the carriage for discharging the load fromthe carrier.

12. An apparatus for the purpose set forth. comprising an inclinedsupporting frame provided with trackways, a tiltable carriage travellingon said trackways, a load carrier arranged on the carriage and eX-tending lengthwise thereof, a supporting element for the carrier, saidelement having one end pivoted with one end of the can riage and itsother end pivoted with an end of the carrier opposite the end to whichthe element is pivoted to the carriage, circular grooved extensionsarranged at the upper end of the frame and forming a continuation ofsaid trackways and providing means for tilting the carriage fordischarging the load from the carrier, means for conveying the carriageupwardly on said frame, means slidably mounted on the frame andextending lengthwise thereof and operated by the carriage when thelatter arrives at the upper end of the frame, causing thereby thediscontinuing of the conveying of the carriage.

In testimony whereof, I affix my signature hereto.

SAMUEL P. ERWIN.

